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From: "jason at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/41898]  New: GCC ignores restrict on array
Date: Sun, 01 Nov 2009 20:25:00 -0000	[thread overview]
Message-ID: <bug-41898-114@http.gcc.gnu.org/bugzilla/> (raw)

Adding a pointless array qualifier to the restrict-1.c test makes it not work
with gcc -O2; we fail to optimize away the call to link_error.

int * __restrict__ a[1];
int * __restrict__ b[1];

extern void link_error (void);

int main()
{
  a[0][0] = 1;
  b[0][0] = 1;
  if (a[0][0] != 1)
    link_error ();
  return 0;
}


-- 
           Summary: GCC ignores restrict on array
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jason at gcc dot gnu dot org
 BugsThisDependsOn: 6392


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41898


             reply	other threads:[~2009-11-01 20:25 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-01 20:25 jason at gcc dot gnu dot org [this message]
2009-11-01 20:59 ` [Bug tree-optimization/41898] " rguenth at gcc dot gnu dot org
2009-11-01 21:01 ` rguenth at gcc dot gnu dot org

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